Precious stone



FIG. 1 is a perspective view of a precious stone, showing my new design.

FIG. 2 is another perspective view of the precious stone of FIG. 1.

FIG. 3 is a side view of FIG. 1 with the opposite side being a mirror image thereof;

FIG. 4 is a top view of FIG. 1; and,

FIG. 5 is a bottom view of FIG. 1. 

CLAIM The ornamental design for a precious stone, as shown and described. 